<!DOCTYPE HTML>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>
    <meta name="apple-mobile-web-app-capable" content="yes"/>
    <meta name="apple-mobile-web-app-status-bar-style" content="black"/>
    <meta content="telephone=no" name="format-detection"/>
    <script src="lib/angular/angular.js"></script>
    <style>
        .a{wi}
    </style>
</head>
<body>
<h2>验证实例</h2>

<form ng-app="" ng-controller="validateCtrl"
      name="myForm" novalidate>

    <p>Username:<br>
        <input type="text" name="user" ng-model="user" required>
<span style="color:red" ng-show="myForm.user.$dirty && myForm.user.$invalid">
<span ng-show="myForm.user.$error.required">Username is required.</span>
</span>
    </p>
    <p>Email:<br>
        <input type="email" name="email" ng-model="email" required>
<span style="color:red" ng-show="myForm.email.$dirty && myForm.email.$invalid">
<span ng-show="myForm.email.$error.required">Email is required.</span>
<span ng-show="myForm.email.$error.email">Invalid email address.</span>
</span>
    </p>

    <p>
        <input type="submit"
               ng-disabled="myForm.user.$dirty && myForm.user.$invalid ||
myForm.email.$dirty && myForm.email.$invalid">
    </p>

</form>
<script>
    function validateCtrl($scope) {
        $scope.user = 'John Doe';
        $scope.email = 'john.doe@gmail.com';
    }

</script>
</body>
</html>